CN109030559A - Split-cavity type gas explosion experimental device - Google Patents
Split-cavity type gas explosion experimental device Download PDFInfo
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- CN109030559A CN109030559A CN201810711021.2A CN201810711021A CN109030559A CN 109030559 A CN109030559 A CN 109030559A CN 201810711021 A CN201810711021 A CN 201810711021A CN 109030559 A CN109030559 A CN 109030559A
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- cavity
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- 238000004880 explosion Methods 0.000 title claims abstract description 78
- 238000013022 venting Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 78
- 239000000428 dust Substances 0.000 claims description 22
- 239000004576 sand Substances 0.000 claims description 17
- 238000002474 experimental method Methods 0.000 claims description 16
- 239000002360 explosive Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 7
- 238000013016 damping Methods 0.000 claims description 6
- 239000002737 fuel gas Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract 3
- 238000009826 distribution Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000545732 Truncatella subcylindrica Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a cavity-divided gas explosion experimental device which comprises a metal explosion tank, an annular partition frame, an explosion venting film, explosion-proof fans and at least 6 spiral sealing covers, wherein the metal explosion tank comprises a combustible gas explosion cavity shell, an air adjacent cavity shell and a top cover, the top of the combustible gas explosion cavity shell is fixedly connected with the top cover, the bottom of the combustible gas explosion cavity shell is fixedly connected with the air adjacent cavity shell, the explosion venting film is fixed on the annular partition frame, a circle of annular bulge is arranged on the inner wall of the air adjacent cavity shell, the annular partition frame is arranged on the annular bulge, the at least two explosion-proof fans are symmetrically arranged in the combustible gas explosion cavity shell, at least 6 mounting holes are uniformly distributed on the combustible gas explosion cavity shell in an annular mode, and each mounting hole is fixedly connected with one spiral sealing cover. The invention can reappear the gas explosion pressure change condition under the closed and limited discharge conditions, has good safety, flexibility and high efficiency, and can be used for the load research of gas explosion and the detection of the explosion discharge component.
Description
Technical field
The invention belongs to safety engineering prevention technical fields, and in particular to a kind of cavity-separating gas burst experiment dress
It sets.
Background technique
As Gas Energy Source is used widely in people's lives, the gas burst accident in restricted clearance has given people
Production and living bring significant damage.It currently, is venting of dust explosion in face of the most-often used method of gas explosion accident in protection design, i.e.,
The gas to explode in space is released by the breakdown of venting of dust explosion component and is introduced into adjacent room space or external environment.It can be seen that
It is of great significance for closed or gas burst load under the conditions of releasing reproduction and research for the protection of gas explosion disaster.Base
In this, currently there is an urgent need to a kind of safe and efficient, gas burst experimental provisions of analog various working.
Existing gas burst experimental provision is mostly spherical or cylindrical container, can only generally simulate confined explosion or release quick-fried
This single operating condition is fried, and releases and usually gas is released in exterior space, shorter mention is limited the case where releasing.Research
Person is main to study pressure change caused by gas burst under different condition by testing in these experiment containers, lacks
Convenient for the venting of dust explosion component detection device of industrial application.
It can be seen that existing technical problem is: current experimental provision can only simulate the gas burst under single operating condition
Phenomenon lacks safety and convenience.Meanwhile lacking the experiment dress that can easily carry out venting of dust explosion component detection in industrial production
It sets.
Summary of the invention
It is an object of the present invention to provide a kind of cavity-separating gas burst experimental provisions, quick-fried for simulating the gas under various working
Fried phenomenon, and a kind of venting of dust explosion component detection platform convenient for industrial application is provided, theoretical reference and technology are provided for engineering protection
It supports.
The technical solution for realizing the aim of the invention is as follows: a kind of cavity-separating gas burst experimental provision, including metal are quick-fried
Fried tank, annular bulkhead, venting of dust explosion film, explosion-proof fan and at least six spirally cover, and the metallic explosive tank includes fuel gas
Explode chamber enclosure, air neighbour chamber enclosure and top cover, is connected at the top of flammable gas explosion chamber enclosure with top cover, bottom and air neighbour chamber
Shell is connected, and venting of dust explosion film is fixed on annular bulkhead, and air neighbour's chamber enclosure inner wall is equipped with a circle annular protrusion, and annular bulkhead is set
It sets on the annular protrusion, at least two explosion-proof fans are symmetricly set in flammable gas explosion chamber enclosure, and fuel gas is quick-fried
At least 6 mounting holes are uniformly distributed on fried chamber enclosure in a ring, be connected a spiral capping on each mounting hole.
The flammable gas explosion chamber enclosure, air neighbour's chamber enclosure are cylindrical shape, and the two diameter is equal, air neighbour's chamber enclosure
Bottom is sealing plane.
The annular protrusion of the air neighbour chamber enclosure inner wall is located at its top.
The cavity-separating gas burst experimental provision, further includes closed washer, and the closed washer is arranged in combustible gas
Body explode chamber enclosure and top cover joint face at and the joint face of flammable gas explosion chamber enclosure and air neighbour chamber enclosure at.
The cavity-separating gas burst experimental provision, further includes damping bed course, damping bed course be located at air neighbour chamber enclosure with
Between ground.
Homogeneous fine sand layer and pressure sensor are equipped in the air neighbour chamber enclosure, the thickness of homogeneous fine sand layer is according to experiment
It is required that being laid with, for adjusting the volume of air neighbour's chamber air, pressure sensor is embedded in homogeneous fine sand layer top surface.Homogeneous fine sand
Layer simultaneously plays a protective role to pressure sensor.
Be equally spaced installation hole in a ring outside the flammable gas explosion chamber enclosure, passes through flange and spiral capping
Connection;It is provided with connector in spiral capping, is divided respectively with explosion-proof extraction pump, gas cylinder, pressure vacuum gauge, igniter, concentration
Analyzer connection, composition air distribution system, concentration control system and ignition system.
In order to guarantee the safe and reliable of experimentation, metallic explosive tank maximum can resist the explosion overpressure of 1.2MPa.
Compared with prior art, the present invention its remarkable advantage is:
(1) the gas burst experiment of confined gas explosion, the limited various workings such as explosion of releasing can easily be carried out.
(2) more convenient by the volume in the adjustable limited space of releasing of air neighbour's chamber enclosure laid inside sand bed.
(3) the venting of dust explosion film between flammable gas explosion chamber enclosure and air neighbour's chamber enclosure and it is equally distributed on combustible gas
Venting of dust explosion mouth of the replaceable spiral cover sealing that body explodes on chamber enclosure equivalent to increase diversified forms keeps experiment more safety high
Effect.
(4) detection for being designed as venting of dust explosion component of air neighbour chamber provides space, can be used as this experimental provision and is convenient for
The venting of dust explosion component detection platform of industrial application.
Detailed description of the invention
Fig. 1 is the overall structure diagram of cavity-separating gas burst experimental provision of the present invention.
Fig. 2 is the top view (removing top cover) of cavity-separating gas burst experimental provision of the present invention.
Wherein 1. metallic explosive tank;2. damping bed course;3. pedestal;4. homogeneous fine sand layer;5. pressure sensor;6. closed
Bed course;7. bolt connection piece;8. spiral capping;9. top cover;10. hook;11. venting of dust explosion film;12. flange;13. explosion-proof wind
Fan;14. explosion-proof extraction pump;15. pressure vacuum gauge;16. igniter;17. concentration analyzer;18. gas cylinder;19. annular bulkhead;
20. flammable gas explosion chamber enclosure;21. air neighbour's chamber enclosure
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
A kind of cavity-separating gas burst experimental provision combined with Figure 1 and Figure 2, including metallic explosive tank 1, annular bulkhead 19, let out
Quick-fried film 11, explosion-proof fan 13 and at least six spirally cover 8.The metallic explosive tank 1 includes flammable gas explosion chamber enclosure
20, air neighbour chamber enclosure 21 and top cover 9, flammable gas explosion chamber enclosure 20, air neighbour chamber enclosure 21 and top cover 9 are along circumferential direction
It is evenly distributed with bolt mouth.
Flammable gas explosion chamber enclosure 20 and air neighbour chamber enclosure 21 are cylindrical shape, and the two diameter is equal.Fuel gas
Explosion 20 bottom of chamber enclosure is connected by screw bolts with air neighbour chamber enclosure 21, and junction is covered with cyclic annular closed bed course 6, guarantees experiment
Air-tightness in the process.20 bottom of flammable gas explosion chamber enclosure is connected by screw bolts with air neighbour chamber enclosure 21 in experimentation
It no longer dismantles afterwards.
Flammable gas explosion chamber enclosure 20 is equal with 9 diameter of circular top cover, and the two is connected by screw bolts, and junction is covered with ring
The closed bed course 6 of shape guarantees air-tightness and safety in experimentation.
Hook 10 is welded at 9 upper center of top cover facilitates lifting to move.Be required to sling top cover 9 after experiment every time with
Replace the venting of dust explosion film 11 in annular bulkhead 19.
21 bottom of air neighbour chamber enclosure is sealing plane, and bottom is equipped with pedestal 3 to guarantee the steady of metal blasting pot 1, and
Mitigate the pressure to ground.It is equipped with damping bed course 2 between the pedestal 3 and bottom surface of 21 bottom of air neighbour chamber enclosure, to reduce
The vibration of metallic explosive tank 1 in experimentation, while reducing the damage to ground.
The homogeneous fine sand layer 4 of different-thickness is laid with inside air neighbour chamber enclosure 21 according to experiment demand.Pressure sensor 5 buries
It is located inside layer of sand 4, top surface and sand bed flush.Homogeneous fine sand layer 4 is same adjustment 21 internal capacity of air neighbour chamber enclosure
When can also play a protective role to pressure sensor 5.
Flammable gas explosion chamber enclosure 20, air neighbour chamber enclosure 21 and top cover 9 are made of high duty metal, and maximum can support
The explosion overpressure of anti-1.2MPa.
It is welded with a ring shape metal bump at the top of 21 inner wall of air neighbour chamber enclosure, annular bulkhead 19 lies in a horizontal plane in annular
In protrusion, fixed using itself self weight, protrusion is equipped with closed bed course, basis on annular bulkhead 19 with 19 contact position of annular bulkhead
The venting of dust explosion film 11 that experiment demand is covered with different disruptive pressures separates two cavitys.
Annular bulkhead 19 divides for the sub- frame of upper layer and lower layer, is evenly distributed with bolt mouth along annular perimeter, will let out in operating process
Quick-fried film 11 is clipped between the sub- frame of upper layer and lower layer, and blending bolt tightens the sub- frame of upper layer and lower layer.The upper straton frame of annular bulkhead 19
Upper surface uniform welding there are four hook, it is mobile for the lifting that carries out in experimentation annular bulkhead 19.
Two explosion-proof fans 13 are at least symmetrical arranged inside flammable gas explosion chamber enclosure 20.Explosion-proof fan 13 passes through steel
On 20 inner wall of flammable gas explosion chamber enclosure, wind direction is horizontally disposed for silk binding.
Be equally spaced at least six installation hole in a ring outside flammable gas explosion chamber enclosure 20, and each installing port is logical
Flange 12 is crossed to connect with spiral capping 8.8 centers of spiral capping are provided with spiral connector, with explosion-proof extraction pump 14, gas cylinder
18, pressure vacuum gauge 15, concentration analyzer 17 form air distribution system.It is tied on the connector that 8 centers of spiral capping open up close
Sealed adhesive tape, it is close using latex after being connect with explosion-proof extraction pump 14, gas cylinder 18, pressure vacuum gauge 15,17 spiral of concentration analyzer
Envelope guarantees air-tightness.Gas cylinder 18 is sent fuel gas to flammable gas explosion chamber enclosure 20 by elongated air inlet pipe, elongated
Gather tiny air inlet in air inlet pipe, can guarantee the uniformity of internal gas concentration in conjunction with explosion-proof fan 13.
A spiral capping 8 outside flammable gas explosion chamber enclosure 20 connect composition igniting system with igniter spiral
System, igniter head of igniter head device go deep into inside flammable gas explosion chamber enclosure 20 lighting a fire, can be selected according to experiment demand
Spark ignition head or hot-wire ignition head.
The operating procedure of cavity-separating gas burst experimental provision of the present invention is as follows:
Flammable gas explosion chamber enclosure 20, air neighbour chamber enclosure 21 and top cover 9 are lifted to specified place, and use spiral shell by step 1
Tether fitting 7 flammable gas explosion chamber enclosure 20 is connect with air neighbour chamber enclosure 21 it is integral.
Step 2, according to experiment demand in the homogeneous fine sand layer 4 of 21 laid inside different-thickness of air neighbour chamber enclosure, will press
Force snesor 5 is embedded in wherein, 5 surface of sensor and 4 flush of sand bed.It according to demand can be by venting of dust explosion component water to be tested
It is flat on sand bed 4.
Step 3, the upper layer and lower layer that the venting of dust explosion film 11 of different disruptive pressures is clipped in annular bulkhead 19 according to experiment demand
It between sub- frame, and will be tightened along the equally distributed bolt of perimeter of annular bulkhead 19, become venting of dust explosion film 11 with annular bulkhead 19
It is whole.The annular frame 19 with venting of dust explosion film is placed in the annular protrusion of 21 top inner wall of air neighbour chamber enclosure using gantry crane
On, closed bed course is equipped between protrusion and annular frame 19.
Step 4 binds explosion-proof fan 13 in 20 inner wall of flammable gas explosion chamber enclosure using iron wire, will using gantry crane
Top cover 9 is hung on flammable gas explosion chamber enclosure 20, and benefit is joined with bolts.
Hole in step 5,20 cavity of flammable gas explosion chamber enclosure passes through flange and the spiral capping 8 with hole
Connection.8 centers of spiral capping are provided with spiral connector, respectively with explosion-proof extraction pump 14, gas cylinder 18, pressure vacuum gauge 15, dense
Degree analyzer 17 is connect with igniter 16.Latex sealing is smeared in each interface after connection.Explosion-proof extraction pump is first opened when experiment
14 will be evacuated to negative pressure inside flammable gas explosion chamber 20, be then shut off aspiration pump, open 18 air inlet of gas cylinder, concentration is by vacuum pressure
Table 15, concentration analyzer 17 control.
Step 6 closes air distribution system after reaching prescribed concentration, the spiral capping 8 connecting with air distribution system is removed, root
It factually tests demand and changes the capping of totally-enclosed or the looping snail spiral cover with venting of dust explosion film into.
Step 7 opens binding in the explosion-proof fan 13 of 20 inner wall of flammable gas explosion chamber.Fan is closed after 3 minutes, by one
A hole is connect by spirally capping 8 with igniter 16, personnel and gas cylinder position, igniting experiments.
In conclusion the present invention is able to carry out the multiple gases explosion test under the conditions of closed and different ventings of dust explosion, and it is used for
The detection of industrial venting of dust explosion component, has preferable safety and convenience.
Claims (8)
1. a kind of cavity-separating gas burst experimental provision, it is characterised in that: including metallic explosive tank (1), annular bulkhead (19), let out
Quick-fried film (11), explosion-proof fan (13) and at least six spirally cover (8), and the metallic explosive tank (1) includes that fuel gas is quick-fried
Fried chamber enclosure (20), air neighbour chamber enclosure (21) and top cover (9), flammable gas explosion chamber enclosure (20) top and top cover (9) are solid
Even, bottom and air neighbour chamber enclosure (21) are connected, and venting of dust explosion film (11) is fixed on annular bulkhead (19), air neighbour's chamber enclosure
(21) inner wall is equipped with a circle annular protrusion, and annular bulkhead (19) is arranged on the annular protrusion, at least two explosion-proof fans
(13) it is symmetricly set in flammable gas explosion chamber enclosure (20), flammable gas explosion chamber enclosure is uniformly distributed in a ring on (20)
At least six mounting hole, be connected on each mounting hole a spiral capping (8).
2. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: the flammable gas explosion chamber
Shell (20), air neighbour chamber enclosure (21) are cylindrical shape, and the two diameter is equal, and air neighbour chamber enclosure (21) bottom is that sealing is flat
Face.
3. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: the air neighbour chamber enclosure
(21) annular protrusion of inner wall is located at its top.
4. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: it further include closed washer (6),
The closed washer (6) is arranged at the joint face of flammable gas explosion chamber enclosure (20) and top cover (9) and fuel gas is quick-fried
At the joint face of fried chamber enclosure (20) and air neighbour chamber enclosure (21).
5. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: it further include damping bed course (2),
Damping bed course (2) is located between air neighbour chamber enclosure (21) and ground.
6. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: the air neighbour chamber enclosure
(21) homogeneous fine sand layer (4) and pressure sensor (5) are equipped in, the thickness of homogeneous fine sand layer (4) is laid with according to requirement of experiment, is used
The volume of air neighbour chamber (21) interior air is adjusted, pressure sensor (5) is embedded in homogeneous fine sand layer (4) top surface;Homogeneous fine sand
Layer (4) simultaneously plays a protective role to pressure sensor (5).
7. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: the flammable gas explosion chamber
Be equally spaced installation hole in a ring outside shell (20), is connect by flange with spiral capping (8);Spiral capping (8)
On be provided with connector, connect respectively with explosion-proof extraction pump, gas cylinder, pressure vacuum gauge, igniter, concentration analyzer, composition is matched
Gas system, concentration control system and ignition system.
8. cavity-separating gas burst experimental provision according to claim 1, it is characterised in that: in order to guarantee experimentation
Securely and reliably, the maximum explosion overpressure that can resist 1.2MPa of metallic explosive tank (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810711021.2A CN109030559B (en) | 2018-07-03 | 2018-07-03 | Cavity-separated gas explosion experimental device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810711021.2A CN109030559B (en) | 2018-07-03 | 2018-07-03 | Cavity-separated gas explosion experimental device |
Publications (2)
Publication Number | Publication Date |
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CN109030559A true CN109030559A (en) | 2018-12-18 |
CN109030559B CN109030559B (en) | 2023-11-10 |
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CN201810711021.2A Active CN109030559B (en) | 2018-07-03 | 2018-07-03 | Cavity-separated gas explosion experimental device |
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US6223473B1 (en) * | 1999-09-10 | 2001-05-01 | Cid Associates, Inc. | Explosion relief system including an explosion relief panel and a blast shaft having two openings |
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CN105928978A (en) * | 2016-04-20 | 2016-09-07 | 中国石油化工股份有限公司 | Testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space |
CN106382470A (en) * | 2015-08-27 | 2017-02-08 | 南京工业大学 | Explosion suppression and explosion venting dual protection device for communicating container |
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-
2018
- 2018-07-03 CN CN201810711021.2A patent/CN109030559B/en active Active
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US6223473B1 (en) * | 1999-09-10 | 2001-05-01 | Cid Associates, Inc. | Explosion relief system including an explosion relief panel and a blast shaft having two openings |
JP2014521478A (en) * | 2011-08-16 | 2014-08-28 | シーアン ジェイ アンド アール ファイヤー ファイティング エクイップメント カンパニー リミテッド | Explosion relief method for aerosol fire extinguishing equipment |
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CN208833701U (en) * | 2018-07-03 | 2019-05-07 | 中国人民解放军陆军工程大学 | Split-cavity type gas explosion experimental device |
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Title |
---|
SONG SUN等: "Effect of vent conditions on internal overpressure time-history during a vented explosion", 《JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES》, pages 85 - 92 * |
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